+++ /dev/null
-/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
-/*
- *
- * (C) 2003 by Argonne National Laboratory.
- * See COPYRIGHT in top-level directory.
- */
-
-#include "mpi.h"
-#include "mpitest.h"
-#include <stdio.h>
-#include <stdlib.h>
-#ifdef HAVE_SYS_TIME_H
-#include <sys/time.h>
-#endif
-#include <time.h>
-#include <math.h>
-#include <assert.h>
-
-/* FIXME: What is this test supposed to accomplish? */
-
-#define START_BUF (1)
-#define LARGE_BUF (256 * 1024)
-
-/* FIXME: MAX_BUF is too large */
-#define MAX_BUF (32 * 1024 * 1024)
-#define LOOPS 10
-
-SMPI_VARINIT_GLOBAL(sbuf, char*);
-SMPI_VARINIT_GLOBAL(rbuf, char*);
-SMPI_VARINIT_GLOBAL(recvcounts, int*);
-SMPI_VARINIT_GLOBAL(displs, int*);
-SMPI_VARINIT_GLOBAL_AND_SET(errs, int, 0);
-
-/* #define dprintf printf */
-#define dprintf(...)
-
-typedef enum {
- REGULAR,
- BCAST,
- SPIKE,
- HALF_FULL,
- LINEAR_DECREASE,
- BELL_CURVE
-} test_t;
-
-void comm_tests(MPI_Comm comm);
-double run_test(long long msg_size, MPI_Comm comm, test_t test_type, double * max_time);
-
-int main(int argc, char ** argv)
-{
- int comm_size, comm_rank;
- MPI_Comm comm;
-
- MTest_Init(&argc, &argv);
- MPI_Comm_size(MPI_COMM_WORLD, &comm_size);
- MPI_Comm_rank(MPI_COMM_WORLD, &comm_rank);
-
- if (LARGE_BUF * comm_size > MAX_BUF)
- goto fn_exit;
-
- SMPI_VARGET_GLOBAL(sbuf) = (void *) calloc(MAX_BUF, 1);
- SMPI_VARGET_GLOBAL(rbuf) = (void *) calloc(MAX_BUF, 1);
-
- srand(time(NULL));
-
- SMPI_VARGET_GLOBAL(recvcounts) = (void *) malloc(comm_size * sizeof(int));
- SMPI_VARGET_GLOBAL(displs) = (void *) malloc(comm_size * sizeof(int));
- if (!SMPI_VARGET_GLOBAL(recvcounts) || !SMPI_VARGET_GLOBAL(displs) || !SMPI_VARGET_GLOBAL(sbuf) || !SMPI_VARGET_GLOBAL(rbuf)) {
- fprintf(stderr, "Unable to allocate memory:\n");
- if (!SMPI_VARGET_GLOBAL(sbuf))
- fprintf(stderr,"\tsbuf of %d bytes\n", MAX_BUF );
- if (!SMPI_VARGET_GLOBAL(rbuf))
- fprintf(stderr,"\trbuf of %d bytes\n", MAX_BUF );
- if (!SMPI_VARGET_GLOBAL(recvcounts))
- fprintf(stderr,"\trecvcounts of %zu bytes\n", comm_size * sizeof(int));
- if (!SMPI_VARGET_GLOBAL(displs))
- fprintf(stderr,"\tdispls of %zu bytes\n", comm_size * sizeof(int));
- fflush(stderr);
- MPI_Abort(MPI_COMM_WORLD, -1);
- exit(-1);
- }
-
- if (!comm_rank) {
- dprintf("Message Range: (%d, %d); System size: %d\n", START_BUF, LARGE_BUF, comm_size);
- fflush(stdout);
- }
-
-
- /* COMM_WORLD tests */
- if (!comm_rank) {
- dprintf("\n\n==========================================================\n");
- dprintf(" MPI_COMM_WORLD\n");
- dprintf("==========================================================\n");
- }
- comm_tests(MPI_COMM_WORLD);
-
- /* non-COMM_WORLD tests */
- if (!comm_rank) {
- dprintf("\n\n==========================================================\n");
- dprintf(" non-COMM_WORLD\n");
- dprintf("==========================================================\n");
- }
- MPI_Comm_split(MPI_COMM_WORLD, (comm_rank == comm_size - 1) ? 0 : 1, 0, &comm);
- if (comm_rank < comm_size - 1)
- comm_tests(comm);
- MPI_Comm_free(&comm);
-
- /* Randomized communicator tests */
- if (!comm_rank) {
- dprintf("\n\n==========================================================\n");
- dprintf(" Randomized Communicator\n");
- dprintf("==========================================================\n");
- }
- MPI_Comm_split(MPI_COMM_WORLD, 0, rand(), &comm);
- comm_tests(comm);
- MPI_Comm_free(&comm);
-
- //free(SMPI_VARGET_GLOBAL(sbuf));
- //free(SMPI_VARGET_GLOBAL(rbuf));
- free(SMPI_VARGET_GLOBAL(recvcounts));
- free(SMPI_VARGET_GLOBAL(displs));
-
-fn_exit:
- MTest_Finalize(SMPI_VARGET_GLOBAL(errs));
- MPI_Finalize();
-
- return 0;
-}
-
-void comm_tests(MPI_Comm comm)
-{
- int comm_size, comm_rank;
- double rtime = rtime; /* stop warning about unused variable */
- double max_time;
- long long msg_size;
-
- MPI_Comm_size(comm, &comm_size);
- MPI_Comm_rank(comm, &comm_rank);
-
- for (msg_size = START_BUF; msg_size <= LARGE_BUF; msg_size *= 2) {
- if (!comm_rank) {
- dprintf("\n====> MSG_SIZE: %d\n", (int) msg_size);
- fflush(stdout);
- }
-
- rtime = run_test(msg_size, comm, REGULAR, &max_time);
- if (!comm_rank) {
- dprintf("REGULAR:\tAVG: %.3f\tMAX: %.3f\n", rtime, max_time);
- fflush(stdout);
- }
-
- rtime = run_test(msg_size, comm, BCAST, &max_time);
- if (!comm_rank) {
- dprintf("BCAST:\tAVG: %.3f\tMAX: %.3f\n", rtime, max_time);
- fflush(stdout);
- }
-
- rtime = run_test(msg_size, comm, SPIKE, &max_time);
- if (!comm_rank) {
- dprintf("SPIKE:\tAVG: %.3f\tMAX: %.3f\n", rtime, max_time);
- fflush(stdout);
- }
-
- rtime = run_test(msg_size, comm, HALF_FULL, &max_time);
- if (!comm_rank) {
- dprintf("HALF_FULL:\tAVG: %.3f\tMAX: %.3f\n", rtime, max_time);
- fflush(stdout);
- }
-
- rtime = run_test(msg_size, comm, LINEAR_DECREASE, &max_time);
- if (!comm_rank) {
- dprintf("LINEAR_DECREASE:\tAVG: %.3f\tMAX: %.3f\n", rtime, max_time);
- fflush(stdout);
- }
-
- rtime = run_test(msg_size, comm, BELL_CURVE, &max_time);
- if (!comm_rank) {
- dprintf("BELL_CURVE:\tAVG: %.3f\tMAX: %.3f\n", rtime, max_time);
- fflush(stdout);
- }
- }
-}
-
-double run_test(long long msg_size, MPI_Comm comm, test_t test_type,
- double * max_time)
-{
- int i, j;
- int comm_size, comm_rank;
- double start, end;
- double total_time, avg_time;
- MPI_Aint tmp;
-
- MPI_Comm_size(comm, &comm_size);
- MPI_Comm_rank(comm, &comm_rank);
-
- SMPI_VARGET_GLOBAL(displs)[0] = 0;
- for (i = 0; i < comm_size; i++) {
- if (test_type == REGULAR)
- SMPI_VARGET_GLOBAL(recvcounts)[i] = msg_size;
- else if (test_type == BCAST)
- SMPI_VARGET_GLOBAL(recvcounts)[i] = (!i) ? msg_size : 0;
- else if (test_type == SPIKE)
- SMPI_VARGET_GLOBAL(recvcounts)[i] = (!i) ? (msg_size / 2) : (msg_size / (2 * (comm_size - 1)));
- else if (test_type == HALF_FULL)
- SMPI_VARGET_GLOBAL(recvcounts)[i] = (i < (comm_size / 2)) ? (2 * msg_size) : 0;
- else if (test_type == LINEAR_DECREASE) {
- tmp = 2 * msg_size * (comm_size - 1 - i) / (comm_size - 1);
- if (tmp != (int)tmp) {
- fprintf( stderr, "Integer overflow in variable tmp\n" );
- MPI_Abort( MPI_COMM_WORLD, 1 );
- exit(1);
- }
- SMPI_VARGET_GLOBAL(recvcounts)[i] = (int) tmp;
-
- /* If the maximum message size is too large, don't run */
- if (tmp > MAX_BUF) return 0;
- }
- else if (test_type == BELL_CURVE) {
- for (j = 0; j < i; j++) {
- if (i - 1 + j >= comm_size) continue;
- tmp = msg_size * comm_size / (log(comm_size) * i);
- SMPI_VARGET_GLOBAL(recvcounts)[i - 1 + j] = (int) tmp;
- SMPI_VARGET_GLOBAL(displs)[i - 1 + j] = 0;
-
- /* If the maximum message size is too large, don't run */
- if (tmp > MAX_BUF) return 0;
- }
- }
-
- if (i < comm_size - 1)
- SMPI_VARGET_GLOBAL(displs)[i+1] = SMPI_VARGET_GLOBAL(displs)[i] + SMPI_VARGET_GLOBAL(recvcounts)[i];
- }
-
- /* Test that:
- 1: sbuf is large enough
- 2: rbuf is large enough
- 3: There were no failures (e.g., tmp nowhere > rbuf size
- */
- MPI_Barrier(comm);
- start = MPI_Wtime();
- for (i = 0; i < LOOPS; i++) {
- MPI_Allgatherv(SMPI_VARGET_GLOBAL(sbuf), SMPI_VARGET_GLOBAL(recvcounts)[comm_rank], MPI_CHAR,
- SMPI_VARGET_GLOBAL(rbuf), SMPI_VARGET_GLOBAL(recvcounts), SMPI_VARGET_GLOBAL(displs), MPI_CHAR, comm);
- }
- end = MPI_Wtime();
- MPI_Barrier(comm);
-
- /* Convert to microseconds (why?) */
- total_time = 1.0e6 * (end - start);
- MPI_Reduce(&total_time, &avg_time, 1, MPI_DOUBLE, MPI_SUM, 0, comm);
- MPI_Reduce(&total_time, max_time, 1, MPI_DOUBLE, MPI_MAX, 0, comm);
-
- return (avg_time / (LOOPS * comm_size));
-}
